Washington Circle is a traffic circle in the northwest quadrant of Washington, D.C., United States. It is located on the border of the Foggy Bottom and West End neighborhoods, which is a part of the Ward 2 section in Washington. It is the intersection of 23rd Street, K Street, New Hampshire Avenue, and Pennsylvania Avenue, N.W. The through lanes of K Street (which are U.S. Route 29) travel underneath the circle in a tunnel, while the service lanes intersect the circle.